1. A hissing or bubbling sound. 2. Effervescence.3. An effervescent / carbonated beverage "plop, plop, fizz, fizz" used to be the slogan in Alka Seltzer commercials for many years. 4. 2. informal ( often foll by out ) to fail or die out, esp after a promising start. Also spelled as fizzle

1. to strike or press with crushing force; crush down; squash. 2. to put down, suppress, or silence, as with a crushing retort or argument. 3. to make a splashing sound. 4. to tread heavily in water, mud, wet shoes, etc., with such a sound.